The article discusses the different opinions regarding characteristics and performance of the choirs in the Amphiktionic Soteria at Delphi, on the basis of epigraphic evidence and by comparison with data from the later festivals held in the Aetolian and Winter Soteria. In conclusion, the research supports to the hypothesis that a competition between small choirs had already taken place in the earliest phase of the Soteria and that this practice naturally continued in the event of Aetolian Soteria, where a competition among choral groups is clearly attested by the agonistic lists. [https://www.brepolsonline.net/doi/abs/10.1484/M.GIFBIB-EB.5.115172]